Zandor,
I have a super closet and would like to use co2. I have the filled tank and regulator, every thing is set up but Im not sure how much , how long or often to feed them. Could you tell me the calculations I would use to figure this out. My closet is 2x3x6. A shelf is about 1.5 ft. from the bottom. My resovoir is underneath. you also said that during this time there should be no air in and no air out. Does this mean that I should shut off my exhaust blower and fans while the lights are on and turn them on when the lights are out? If so what about heat?

Im still reading up on all this stuff before I try it, but it seems like you know what you are talking about in all the other threads, so I hope you dont mind. Also do I feed them co2 during veg or wait till they are in flower? Any help would be appreicated. God knows this girl needs help.